Mercury's surface in "enhanced color," a color scheme created to emphasize color differences. This is not what Mercury would look like to the human eye, but by applying mathematical analysis to images, color differences can be accentuated beyond those visible to a person.
Mount Rushmore National Memorial under construction.
The workers had to endure conditions that varied from blazing hot to bitterly cold and windy. Each day they climbed 700 stairs to the top of the mountain to punch-in on the time clock. Then 3/8 inch thick steel cables lowered them over the front of the 500-foot face of the mountain in a "bosun chair." Despite the dangers, no one was killed during the project.
Otters in Glacier Bay National Park and Preserve, Alaska.
The sea otter population of Glacier Bay has increased dramatically in the past 20 years. Ecologists consider sea otters a keystone species here. Otters consume vast quantities of clams, urchins, crabs, and other invertebrates and their presence creates ripples through the ecosystem. NPS photo.
Every day someone like you becomes a wildland wildfire fighter, a teacher, a trail-builder, a museum curator, or a park ranger. Discover your opportunities in national parks. Come to play. Come to learn. Come to serve. Develop your environmental leadership skills. Find a job. Be the next generation to preserve and protect these great places.
With more than 80% of Americans living in urban areas, urban parks are more important than ever. The father of American landscape architecture, Frederick Law Olmsted, said of urban parks:
It is one great purpose of the Park to supply to the hundreds of thousands of tired workers, who have no opportunity to spend their summers in the country, a specimen of God's handiwork that shall be to them, inexpensively, what a month or two in the White Mountains or the Adirondacks is, at great cost, to those in easier circumstances.
Secretaries Salazar and Chu Lead Administration Team Offering Federal Scientific and Technological Support to BP Engineers
Office of the Secretary
Last edited 4/25/2016
HOUSTON, TX -- At the request of the President, Secretary Salazar and Secretary Chu traveled to Houston today to participate in meetings with DOE and national lab staff, industry officials and other engineers and scientists involved in finding solutions to cap the flow of oil and contain the spill. Secretary Salazar and Secretary Chu conferred at the BP Command Center in Houston with teams of federal and industry scientists and engineers who are using cutting-edge technological resources and innovative ideas to find solutions to containing the Deepwater Horizon oil spill and protecting Gulf Coast communities.
“President Obama has asked us to bring a team of top administration officials and government scientists here for an extensive discussion with BP officials on how to urgently deal with the critical challenges of controlling and sealing their damaged wellhead and containing a major oil spill that threatens Gulf Coast communities and natural resources,” Secretary Salazar said. “This is a vital national priority and we cannot and will not rest until BP has capped the well and controlled the spill.”
“Department of Energy scientists from the National Laboratories have been working with the operations experts at the BP Command center on ways to determine what is happening inside the BOP (Blowout Preventer) atop the damaged wellhead,” Secretary Chu said. “They are using the extensive resources of the lab network, including high powered supercomputers to assist with imaging and sampling of the seafloor; measuring pressures in the blowout preventer stack; and analyzing the riser structure and fluid flows.”
“Putting our best scientific minds together with BP's deepwater drilling engineers will enable these dedicated professionals to examine every feasible means and practical solution to this environmental crisis in the Gulf of Mexico,” Chu said.
Department of Energy Activities in Response to the Deepwater Oil Spill
Secretary Chu assembled a group of top scientific experts from inside and outside of government to join in today's discussions in Houston about possible solutions. This team includes:
Dr. Tom Hunter, Director of the Department of Energy's Sandia National Labs
Dr. George A. Cooper, an expert in materials science and retired professor from UC Berkeley
Richard Lawrence Garwin, a physicist and IBM Fellow Emeritus
Dr. Jonathan I. Katz, professor of physics at Washington University
Dr. Alexander H. Slocum, professor of mechanical engineering at MIT
Additional details about the Department of Energy's activities in providing technical and scientific assistance to the response efforts can be found on their website, click here.
Department of the Interior Activities in Response to the Deepwater Oil Spill
On Friday, Secretary Salazar dispatched Dr. Marcia McNutt, the director of the U.S. Geological Survey, to the BP Command Center in Houston to help coordinate the joint efforts of federal scientists who are working with BP engineers to address several technological challenges and approaches to securing the damaged well head, stopping the leak and minimizing impacts from the spill. McNutt has the resources of almost 10,000 USGS scientists ready to assist the effort.
Salazar also met with a manufacturer of Blowout Preventer (BOP) devices last week to learn about its operation and the factors that may have caused it to malfunction. The BOPs contain mechanisms designed to shut off the flow of oil and gas, either on command or automatically, when a wellhead is damaged or experiences a blowout. Federal and company engineers are seeking to determine why the BOP atop the Deepwater Horizon well failed to activate as designed.
In addition, Secretary Salazar has undertaken several initiatives in response to BP's spill, including:
Ordered immediate inspections of all deepwater operations in the Gulf of Mexico. The inspections of deepwater drilling rigs found Incidents of Non-Compliance (INC) on two rigs. Those violations were corrected and no other violations were found. To view the inspection report, click here. Inspections of deepwater production platforms is ongoing.
Issued a safety notice to all operators, reminding them of their responsibilities to follow MMS regulations and to conduct full and thorough tests of their equipment;
Established the Outer Continental Shelf Safety Oversight Board within the Department of the Interior with top officials to strengthen Outer Continental Shelf safety and improve overall management, regulation, and oversight of OCS operations;
Launched a joint investigation of the incident with the U.S. Coast Guard to determine what happened.